The White House says the former rivals-turned-colleagues met for about an hour and discussed a range of issues.

Obama and Clinton have met occasionally since she left the administration in 2013 after serving as secretary of state. Monday's meeting comes as Clinton prepares to launch another presidential campaign.

Moments after the White House confirmed the meeting, Clinton posted a message on Twitter praising Obama's health care law and its provisions aimed at covering young people and those with preexisting conditions. In a jab at Republicans who want to get rid of the law, she wrote: "Repeal those things? Embrace them!"

To emphasize her point, Clinton shared an old photo of her and Obama hugging.